c - 有没有办法进一步优化这个MIPs代码？

Question

int strlen( char* string ) {
    int count = 0;
    while( *string != ‘\0’ ) {
        string++;
        count++;
    }
    return count;
}

我正在研究这些...
我想知道您是否可以提出任何优化建议？
以下是 MIP 代码...

strlen:
li $t0, 0 # initialize the count to zero
loop:
lbu $t1, 0($a0) # load the next character into t1
beqz $t1, exit # check for the null character
addi $a0, $a0, 1 # increment the string pointer
addi $t0, $t0, 1 # increment the count
j loop # return to the top of the loop
exit:

Answer 1

 // will (probably) output x86_64 assembly (or your computer's native assembly)
 gcc -Wall -S test.c


 // will output mips3 assembly
 gcc -Wall -march=mips3 -S test.c

或者进行优化:

 // will output (optimized) mips3 assembly (if possible)
 gcc -Wall -O3 -march=mips3 -S test.c